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Vaccines for hepatitis A typhoid and cholera and a combined jab for diptheria, polio and tetanus are usually available free on the NHS. However, this could change with this particular service potentially up for review.

Described as: Clinically effective but low priority

Potential saving: £31.3m

Gluten-free food

Around one in 100 people have coeliac disease, caused by a reaction to gluten, that can be treated by cutting the substance from a patient's diet. Once diagnosed as coeliac by a doctor, patients in most parts of the UK can receive gluten-free staple foods from a pharmacy through a prescription from a GP.

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Used for mild to moderate pain relief the drug is a combination of dextropropoxyphene and paracetamol

There have been previous concerns that the drug has been linked to suicides and poisonings and it was gradually phased out from wide use between 2007 and 2007.

Described as: Low clinical effectiveness

Potential saving: £8.3m

Doxazosin MR

Costing the NHS £7 million last year Doxazosin are a series of drugs used to treat hypertension

Described as: Clinically effective but with a cheaper alternative

Potential saving: £7.1m

Fentanyl

Generally used in palliative care, fentanyl is a strong painkiller that comes as patches for terminally ill patients. In many cases morphine is considered easier and cheaper to prescribe, and is just as effective for end-of life care.